Al-augite and Cr-diopside ultramafic xenoliths in basaltic rocks from western United States
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Abstract
Ultramafic xenoliths in basalts from the western United States are divided into Al-augite and Cr-diopside groups. The Al-augite group is characterized by Al, Ti-rich augites, comparatively Fe-rich olivine and orthopyroxene, and Al-rich spinel, the Cr-diopside group by Cr-rich clinopyroxene and spinel and by Mg-rich olivine and pyroxenes. Both groups have a wide range of subtypes, but the Al-augite group is dominated by augite-rich varieties, and the Cr-diopside group by olivine-rich lherzolites.
Study Area
Publication type | Article |
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Publication Subtype | Journal Article |
Title | Al-augite and Cr-diopside ultramafic xenoliths in basaltic rocks from western United States |
Series title | Physics and Chemistry of the Earth |
DOI | 10.1016/B978-0-08-018017-5.50024-9 |
Volume | 9 |
Issue | C |
Year Published | 1975 |
Language | English |
Publisher | Elsevier |
Description | 16 p. |
First page | 257 |
Last page | 272 |
Country | United States |
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